Providers Kaylee O'Neill to Nikki O'Neill, MD
300 individual NPIs in the federal registry, part 16,048 of 24,427 of the A to Z by surname. Each row is the registry's record: the name and credential, the NPI, the primary specialty, the practice city and the year the NPI was issued. 91 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Kaylee O'Neill | 1548978448 | Behavior Technician | Sacramento, CA | 2022 |
| Kaylee O'Neill, LMSW | 1609718766 | Social Worker | Austin, TX | 2026 |
| Kaylee O'Neill, CNM | 1801721584 | Maternal & Fetal Medicine Physician | Gettysburg, PA | 2026 |
| Kayleigh O'Neill | 1033980305 | Behavior Analyst | Bethlehem, GA | 2024 |
| Kaylyn O'Neill, OTR/L | 1154966406 | Occupational Therapist | Worcester, MA | 2019 |
| Kealan O'Neill, D.O. | 1003357195 | Family Medicine Physician | Madison, AL | 2017 |
| Keira O'Neill, LPN | 1962718205 | Licensed Practical Nurse | Columbus, OH | 2010 |
| Kelleigh O'Neill, M.S., ATC | 1205336161 | Athletic Trainer | Gorham, ME | 2018 |
| Kelli O'Neill, LAPC | 1124417662 | Mental Health Counselor | Woodstock, GA | 2015 |
| Kelli O'Neill | 1851259204 | Registered Nurse | Lansing, MI | 2026 |
| Kelli O'Neill | 1942043187 | Clinical Social Worker | Barre, VT | 2024 |
| Kelly O'Neill, M.A.ED.; CWCII | 1003777814 | Case Manager/Care Coordinator | Mammoth Lakes, CA | 2025 |
| Kelly O'Neill, LPCC | 1235942384 | Professional Counselor | Fort Collins, CO | 2025 |
| Kelly O'Neill | 1316345382 | Clinical Psychologist | San Diego, CA | 2014 |
| Kelly O'Neill | 1457873598 | Registered Nurse | Providence, RI | 2017 |
| Kelly O'Neill | 1467020750 | Physical Therapist | Lake Oswego, OR | 2021 |
| Kelly O'Neill, BS | 1487918835 | Contractor | Henderson, NV | 2012 |
| Kelly O'Neill, RN | 1649468018 | Registered Nurse | Warren, RI | 2007 |
| Kelly O'Neill | 1730479098 | Psychologist | Las Vegas, NV | 2011 |
| Kelly O'Neill | 1730582388 | Assistant Behavior Analyst | Livonia, MI | 2014 |
| Kelly O'Neill | 1801113337 | Licensed Vocational Nurse | Escondido, CA | 2010 |
| Kelly O'Neill, MD | 1821067364 | Ophthalmology Physician | Fairfield, OH | 2006 |
| Kelly O'Neill, DC | 1851606495 | Chiropractor | Naperville, IL | 2010 |
| Kelly O'Neill | 1881463107 | Clinical Social Worker | Philadelphia, PA | 2023 |
| Kelsey O'Neill, NP | 1366305062 | Family Nurse Practitioner | Lumberton, NC | 2025 |
| Kelsey O'Neill | 1427864305 | Mental Health Counselor | Vancouver, WA | 2024 |
| Kelsey O'Neill | 1518519552 | Mental Health Counselor | Bellevue, WA | 2019 |
| Kelsey O'Neill, MD | 1578359550 | Student in an Organized Health Care Education/Training Program | Temecula, CA | 2025 |
| Kelsey O'Neill, RD | 1801299466 | Registered Dietitian | Kalispell, MT | 2014 |
| Kelsey O'Neill | 1851742076 | Behavior Analyst | Lutz, FL | 2016 |
| Kenneth O'Neill, MD | 1447266341 | Internal Medicine Physician | Stevensville, MI | 2006 |
| Kenneth O'Neill | 1487724001 | Pharmacist | Madison, WI | 2006 |
| Kenneth O'Neill, OTR/L | 1649400169 | Hand Occupational Therapist | Napa, CA | 2009 |
| Kerri O'Neill, M.S., P.T. | 1790930063 | Physical Therapist | Brooklyn, NY | 2008 |
| Kerry O'Neill, PT, MHA | 1265728091 | Physical Therapist | Plainville, MA | 2011 |
| Kerry O'Neill | 1477200731 | Registered Nurse | Winchester, VA | 2022 |
| Kerry O'Neill, DC | 1740344324 | Chiropractor | Seattle, WA | 2006 |
| Kerry O'Neill | 1942748207 | Speech-Language Pathologist | Baton Rouge, LA | 2017 |
| Kerry O'Neill, RPH, BCOP | 1962366567 | Oncology Pharmacist | Saint Cloud, MN | 2025 |
| Kevan O'Neill, DDS, MDS | 1528329372 | Dentist | Providence, RI | 2012 |
| Kevin O'Neill, M.S., A.T.C. | 1023135308 | Athletic Trainer | Davie, FL | 2007 |
| Kevin O'Neill, PT | 1154352680 | Physical Therapist | Avondale, PA | 2006 |
| Kevin O'Neill, LCSW, LCADC | 1245440122 | Clinical Social Worker | Allentown, NJ | 2007 |
| Kevin O'Neill, FNP | 1255030722 | Family Nurse Practitioner | Atlanta, GA | 2023 |
| Kevin O'Neill, D.D.S., P.C. | 1447351150 | General Practice Dentistry | Centennial, CO | 2006 |
| Kevin O'Neill | 1588191241 | Psychiatric/Mental Health Registered Nurse | Yakima, WA | 2017 |
| Kevin O'Neill, D.D.S., M.S.D. | 1700903762 | Endodontics | Roseville, CA | 2007 |
| Kevin O'Neill, MS, LPCC | 1770693574 | Professional Counselor | Dayton, OH | 2006 |
| Kevin O'Neill, MD | 1770787269 | Orthopaedic Surgery of the Spine Physician | Indianapolis, IN | 2007 |
| Kevin O'Neill | 1780511873 | Paramedic | Kirkland, WA | 2026 |
| Kevin O'Neill, MD | 1851348668 | Anesthesiology Physician | Indianapolis, IN | 2006 |
| Kevin O'Neill, MS, OTR/L | 1871963033 | Occupational Therapist | Acworth, GA | 2015 |
| Kevyn O'Neill, BSW | 1396173043 | Mental Health Counselor | Seattle, WA | 2013 |
| Kiersten O'Neill, PA-C | 1003430596 | Physician Assistant | Chicago, IL | 2020 |
| Kiley O'Neill, DPT | 1881186450 | Physical Therapist | Calhoun, LA | 2018 |
| Kim-Marie O'Neill, OT | 1619333473 | Occupational Therapist | North Easton, MA | 2016 |
| Kimberley O'Neill | 1356183859 | Marriage & Family Therapist | Temecula, CA | 2024 |
| Kimberly O'Neill | 1407702210 | School Registered Nurse | Ventura, CA | 2026 |
| Kimberly O'Neill, M.D. | 1437683992 | Neurology Physician | New York, NY | 2017 |
| Kimberly O'Neill, O.T. | 1447380274 | Occupational Therapist | Gainesville, FL | 2007 |
| Kimberly O'Neill, MSPT | 1447561089 | Physical Therapist | Fontana, CA | 2010 |
| Kimberly O'Neill, P.D. | 1962508002 | Pharmacist | Pocahontas, AR | 2006 |
| Kirsten O'Neill, SLP | 1689901092 | Speech-Language Pathologist | Narragansett, RI | 2009 |
| Kirsten O'Neill, RN, IBCLC | 1790407914 | Lactation Consultant (Registered Nurse) | Virginia Beach, VA | 2022 |
| Kristen O'Neill, MSW | 1255413589 | Social Worker | Jackson, MI | 2006 |
| Kristen O'Neill | 1750539979 | Occupational Therapist | N Charleston, SC | 2008 |
| Kristen O'Neill, OTRL, RYT | 1881195758 | Occupational Therapist | Troy, MI | 2018 |
| Kristin O'Neill, FNP-C | 1053919845 | Family Nurse Practitioner | Bartonville, TX | 2020 |
| Kristin O'Neill, RN | 1821769811 | Registered Nurse | Appleton, WI | 2021 |
| Kristina O'Neill | 1073467130 | Behavior Technician | Avondale, AZ | 2026 |
| Kristy O'Neill, FNP | 1841773140 | Psychiatric/Mental Health Nurse Practitioner | Lakeland, FL | 2018 |
| Krysta O'Neill, D.C. | 1306250899 | Chiropractor | Lewisburg, PA | 2014 |
| Kurt O'Neill, DC | 1639163132 | Chiropractor | Bellevue, WA | 2005 |
| Kyle O'Neill, LSW | 1275091811 | Social Worker | Denver, CO | 2019 |
| Lana O'Neill, NP | 1245660273 | Family Nurse Practitioner | Brooklyn, NY | 2013 |
| Laney O'Neill, MPT | 1104933951 | Physical Therapist | Des Moines, WA | 2006 |
| Laura O'Neill, SLP | 1023366572 | Speech-Language Pathologist | Massapequa, NY | 2012 |
| Laura O'Neill, MD | 1033477468 | Pediatrics Physician | Seattle, WA | 2012 |
| Laura O'Neill, LCSW | 1215245733 | Clinical Social Worker | Hartford, CT | 2010 |
| Laura O'Neill, DPT | 1427382092 | Physical Therapist | Bridgeville, PA | 2009 |
| Laura O'Neill, PA-C | 1487286597 | Medical Physician Assistant | Norfolk, VA | 2020 |
| Laura O'Neill | 1497228662 | Counselor | Seattle, WA | 2019 |
| Laura O'Neill, MSW-CC | 1962731299 | Clinical Social Worker | Portland, ME | 2009 |
| Lauren O'Neill, CCC-SLP | 1104788843 | Speech-Language Pathologist | Napa, CA | 2025 |
| Lauren O'Neill, MD | 1205128592 | Dermatology Physician | Maple Grove, MN | 2011 |
| Lauren O'Neill | 1356227342 | Mental Health Counselor | Olympia, WA | 2025 |
| Lauren O'Neill, MS, CCC-SLP | 1720482375 | Speech-Language Pathologist | Philadelphia, PA | 2014 |
| Lauren O'Neill, M.S. | 1881014025 | Specialist | Seaford, NY | 2014 |
| Leah O'Neill, CADC | 1437032398 | Addiction (Substance Use Disorder) Counselor | Rockland, ME | 2025 |
| Leigh O'Neill, CRNA | 1235727173 | Certified Registered Nurse Anesthetist | Abington, PA | 2021 |
| Leon O'Neill, DO | 1275723736 | Cardiovascular Disease Physician | Eatontown, NJ | 2007 |
| Leslie O'Neill, LMFT | 1225420920 | Marriage & Family Therapist | Rancho Cordova, CA | 2015 |
| Leslie O'Neill, PHD | 1609205202 | Clinical Psychologist | Lebanon, NH | 2013 |
| Leslie O'Neill, PT, DPT | 1760890362 | Physical Therapist | Newark, DE | 2014 |
| Liam O'Neill, MD | 1790434819 | Student in an Organized Health Care Education/Training Program | Los Angeles, CA | 2022 |
| Liam O'Neill, MBBS | 1972227460 | Internal Medicine Physician | Philadelphia, PA | 2022 |
| Lily O'Neill | 1073442281 | Behavior Technician | Silver Spring, MD | 2026 |
| Linda O'Neill, O.T. | 1184627713 | Occupational Therapist | Warren, OH | 2005 |
| Linda O'Neill, LMSW | 1477958502 | Social Worker | Lexington, SC | 2014 |
| Lindsey O'Neill, MSN, APRN, PMHNP-BC | 1275310682 | Psychiatric/Mental Health Nurse Practitioner | Belton, TX | 2023 |
| Lindsey O'Neill | 1427654821 | Nutritionist | Wayne, PA | 2020 |
| Lindsey O'Neill, M.A., CCC-SLP | 1861934150 | Speech-Language Pathologist | Cincinnati, OH | 2016 |
| Lisa O'Neill, NP | 1427010990 | Nurse Practitioner | Eau Claire, WI | 2006 |
| Lisa O'Neill, CNM | 1427167394 | Advanced Practice Midwife | Greenfield, CA | 2006 |
| Lisa O'Neill | 1528816253 | Speech-Language Pathologist | Leander, TX | 2024 |
| Lisa O'Neill, APRN | 1710579883 | Adult Health Nurse Practitioner | Santa Rosa Beach, FL | 2021 |
| Lise O'Neill, MA, LPC | 1942350467 | Professional Counselor | Manchester, CT | 2007 |
| Liya O'Neill | 1659887271 | Licensed Practical Nurse | Brooklyn, NY | 2017 |
| Lorelei O'Neill | 1548613920 | Marriage & Family Therapist | Laguna Hills, CA | 2016 |
| Lori O'Neill, PT | 1063538007 | Physical Therapist | Chapel Hill, NC | 2007 |
| Lori O'Neill, LCSW | 1952362543 | Clinical Social Worker | New Port Richey, FL | 2006 |
| Lorraine O'Neill, MS | 1568767614 | Case Manager/Care Coordinator | Ponca City, OK | 2011 |
| Luke O'Neill, M.D. | 1962855478 | Hospice and Palliative Medicine (Internal Medicine) Physician | University Place, WA | 2016 |
| Lynn O'Neill | 1356575609 | Anesthesiology Physician | Huntington, NY | 2009 |
| Lynn O'Neill, M.D. | 1518099829 | Hospice and Palliative Medicine (Internal Medicine) Physician | Decatur, GA | 2007 |
| Lynne O'Neill, RPH | 1649552779 | Pharmacist | Columbus, OH | 2011 |
| Mackenzie O'Neill, APRN | 1629454889 | Acute Care Nurse Practitioner | Hartford, CT | 2015 |
| Madelaine O'Neill, M.S., CCC-SLP | 1043970080 | Speech-Language Pathologist | Garland, TX | 2021 |
| Madeleine O'Neill | 1912526310 | Speech-Language Pathologist | Albuquerque, NM | 2020 |
| Madison O'Neill | 1467248229 | Behavior Technician | Los Angeles, CA | 2025 |
| Madison O'Neill, PA-C | 1487261475 | Physician Assistant | Burlington, MA | 2020 |
| Maeve O'Neill, LPC, MAC | 1174677272 | Professional Counselor | Liberty Hill, TX | 2007 |
| Maeve O'Neill, MD | 1396194601 | Psychiatry Physician | Boston, MA | 2016 |
| Maggie O'Neill | 1407672520 | Student in an Organized Health Care Education/Training Program | Pittsburgh, PA | 2024 |
| Maggie O'Neill | 1619635695 | Behavior Technician | Englewood, CO | 2021 |
| Margaret O'Neill, PHD | 1073696910 | Psychologist | San Luis Obispo, CA | 2006 |
| Margaret O'Neill | 1164250064 | Nurse Practitioner | Sewell, NJ | 2024 |
| Margaret O'Neill, MD | 1255918868 | Obstetrics & Gynecology Physician | Glastonbury, CT | 2021 |
| Margaret O'Neill | 1265563704 | Case Manager/Care Coordinator | Buffalo, NY | 2007 |
| Margaret O'Neill, RD,CDE | 1316006950 | Registered Dietitian | Cranston, RI | 2006 |
| Margaret O'Neill, MA | 1326753963 | Mental Health Counselor | Mc Murray, PA | 2023 |
| Margaret O'Neill | 1376798835 | Clinical Social Worker | Las Vegas, NV | 2008 |
| Margaret O'Neill, LCSW | 1417064692 | Clinical Social Worker | Gloucester, MA | 2006 |
| Margaret O'Neill, MSW, LCSW | 1780947325 | Clinical Social Worker | Hackensack, NJ | 2012 |
| Margaret O'Neill, AU.D | 1811931256 | Audiologist | Clifton Park, NY | 2006 |
| Margaret O'Neill, OTR | 1871831586 | Pediatric Occupational Therapist | Watauga, TX | 2013 |
| Margaret O'Neill, MD | 1942319157 | Pediatric Adolescent Medicine Physician | West Hartford, CT | 2006 |
| Margaret O'Neill, LPC | 1962253849 | Professional Counselor | Chicago, IL | 2024 |
| Margaret O'Neill, LCSW | 1972662070 | Clinical Social Worker | Lantana, FL | 2006 |
| Margot O'Neill, PA-C | 1194809087 | Hematology & Oncology Physician | Durham, NC | 2006 |
| Mari O'Neill, PT | 1366524977 | Physical Medicine & Rehabilitation Physician | Seattle, WA | 2006 |
| Mari O'Neill | 1962376582 | Behavior Technician | Henrico, VA | 2025 |
| Maria O'Neill, M.D. | 1669435434 | Anesthesiology Physician | Saint Louis, MO | 2006 |
| Mariana O'Neill, APRN, FNP-BC | 1679043566 | Family Nurse Practitioner | Hialeah, FL | 2018 |
| Marianne O'Neill | 1285021550 | Peer Specialist | Hillsboro, OR | 2015 |
| Marilyn O'Neill, RPN | 1770798829 | Adult Psychiatric/Mental Health Registered Nurse | Glen Cove, NY | 2007 |
| Marina O'Neill | 1407343106 | Developmental Therapist | Danvers, MA | 2018 |
| Marisa O'Neill, DO | 1093164873 | Surgery Physician | Ypsilanti, MI | 2016 |
| Marissa O'Neill, TLLP | 1033569868 | Psychologist | Midland, MI | 2016 |
| Marissa O'Neill | 1255056651 | Day Training/Habilitation Specialist | Pittsburg, CA | 2022 |
| Mark O'Neill, L.I.C.S.W. | 1326428517 | Clinical Social Worker | Providence, RI | 2015 |
| Mark O'Neill | 1538795026 | Physical Therapist | Columbia, SC | 2020 |
| Mark O'Neill, LCSW-C | 1588653950 | Clinical Social Worker | Kingsville, MD | 2005 |
| Marlo O'Neill, RKT | 1376985176 | Kinesiotherapist | North Las Vegas, NV | 2013 |
| Martha O'Neill, MS, RD | 1386224145 | Registered Dietitian | Dallas, TX | 2021 |
| Mary O'Neill, MD | 1043291875 | Diagnostic Radiology Physician | Beverly, MA | 2005 |
| Mary O'Neill, OTD | 1053046979 | Occupational Therapist | Cleveland, OH | 2022 |
| Mary O'Neill | 1053150490 | Behavior Technician | Farmington Hills, MI | 2024 |
| Mary O'Neill, DO | 1073777603 | Family Medicine Physician | Asheville, NC | 2008 |
| Mary O'Neill, PH.D. | 1184838864 | Psychologist | Flagstaff, AZ | 2007 |
| Mary O'Neill, PSY.D. | 1215339171 | Clinical Psychologist | Albany, NY | 2014 |
| Mary O'Neill, FNP-BC | 1275914798 | Family Nurse Practitioner | Kansas City, MO | 2015 |
| Mary O'Neill, MSSW | 1396101499 | Social Worker | Knoxville, TN | 2016 |
| Mary O'Neill, LCSW | 1417217878 | Clinical Social Worker | Pleasanton, CA | 2012 |
| Mary O'Neill, SLP | 1437430626 | Speech-Language Pathologist | Temecula, CA | 2011 |
| Mary O'Neill | 1487742474 | Clinical Psychologist | Nicholasville, KY | 2006 |
| Mary O'Neill, PH.D. | 1770648701 | Mental Health Counselor | Brookline, MA | 2006 |
| Mary O'Neill, RN | 1811767767 | Home Health Registered Nurse | Reno, NV | 2024 |
| Mary O'Neill, L.C.S.W. | 1851493316 | Clinical Social Worker | Stony Brook, NY | 2006 |
| Mary O'Neill, CRNP | 1912210766 | Adult Health Nurse Practitioner | Warminster, PA | 2010 |
| Mary O'Neill, OTR/L | 1912767013 | Occupational Therapist | Salt Lake City, UT | 2024 |
| Mary O'Neill | 1962669564 | Acupuncturist | Prescott, AZ | 2008 |
| Mary O'Neill, FNP | 1992850333 | Adult Health Nurse Practitioner | Pawleys Island, SC | 2007 |
| Mary Ann O'Neill, MFT | 1104046564 | Marriage & Family Therapist | Stockton, CA | 2007 |
| Mary Joan O'Neill, M.D. | 1861431959 | Emergency Medicine Physician | Milford, MA | 2006 |
| Mary-Amanda O'Neill, M.D. | 1548550882 | Family Medicine Physician | Mashpee, MA | 2011 |
| Mary-Ellen O'Neill | 1073160677 | Attendant Care Provider | La Quinta, CA | 2019 |
| Mary-Teresa O'Neill, M.D. | 1518270784 | Student in an Organized Health Care Education/Training Program | Scottsdale, AZ | 2010 |
| Matthew O'Neill, MD, PHD | 1063260123 | Student in an Organized Health Care Education/Training Program | Boston, MA | 2024 |
| Matthew O'Neill, M.P.T. | 1265673289 | Physical Therapist | Overland Park, KS | 2009 |
| Matthew O'Neill, M.D. | 1891952792 | Emergency Medicine Physician | New York, NY | 2008 |
| Matthew O'Neill, LPT | 1962674853 | Physical Therapist | Hickory, NC | 2008 |
| Matthew O'Neill, PT, DPT | 1992729842 | Physical Therapist | Kearney, NE | 2006 |
| Maura O'Neill | 1841538261 | Social Worker | Fresno, CA | 2013 |
| Maureen O'Neill, SPEECH THERAPIST | 1154892750 | Speech-Language Pathologist | Ypsilanti, MI | 2018 |
| Maureen O'Neill, ARNP | 1912442799 | Family Nurse Practitioner | Naples, FL | 2017 |
| Meagan O'Neill, PT | 1720050719 | Physical Therapist | Ipswich, MA | 2006 |
| Meagan O'Neill, M.D. | 1841452216 | Pediatrics Physician | Indianapolis, IN | 2008 |
| Meaghan O'Neill | 1023592680 | Behavior Technician | Chelmsford, MA | 2018 |
| Meaghan O'Neill | 1629705223 | Behavior Technician | Corpus Christi, TX | 2022 |
| Meaghan O'Neill, PA-C | 1831730886 | Physician Assistant | Bronx, NY | 2019 |
| Meg O'Neill, MS,PT | 1083812226 | Physical Therapist | Wakefield, RI | 2007 |
| Megan O'Neill, DPT | 1003454091 | Physical Therapist | New York, NY | 2019 |
| Megan O'Neill | 1053677070 | Pharmacy Technician | Freehold, NJ | 2012 |
| Megan O'Neill, ATC | 1053938993 | Athletic Trainer | Wilmington, DE | 2020 |
| Megan O'Neill | 1073112447 | Athletic Trainer | Hamden, CT | 2020 |
| Megan O'Neill, PA-C | 1184603656 | Medical Physician Assistant | Monterey, CA | 2006 |
| Megan O'Neill | 1194360321 | Registered Nurse | Desert Hot Springs, CA | 2019 |
| Megan O'Neill, RN, BSN | 1265848758 | Registered Nurse | White River Junction, VT | 2014 |
| Megan O'Neill, SPECIAL EDUCATION | 1316351745 | Specialist | Purchase, NY | 2014 |
| Megan O'Neill | 1477483105 | Marriage & Family Therapist | Portland, OR | 2026 |
| Megan O'Neill, CRNA | 1487239166 | Certified Registered Nurse Anesthetist | Travis Afb, CA | 2021 |
| Megan O'Neill, DDS | 1548307333 | Dentist | Holmesville, OH | 2007 |
| Megan O'Neill, LCPC | 1952845893 | Mental Health Counselor | South Portland, ME | 2016 |
| Meghan O'Neill, PA-C | 1154725497 | Medical Physician Assistant | Stony Brook, NY | 2014 |
| Meghan O'Neill, MSN, CRNP | 1174169841 | Acute Care Nurse Practitioner | Philadelphia, PA | 2019 |
| Meghan O'Neill, OTR/L | 1457112708 | Occupational Therapist | Plymouth Meeting, PA | 2024 |
| Meghan O'Neill | 1740505569 | Neurology with Special Qualifications in Child Neurology Physician | Chicago, IL | 2010 |
| Meghan O'Neill | 1811505530 | Counselor | Watertown, MA | 2020 |
| Meghan O'Neill | 1861255689 | Registered Nurse | White Plains, NY | 2024 |
| Meghan O'Neill | 1891642476 | Behavior Technician | Jenison, MI | 2026 |
| Melanie O'Neill, MD | 1053483917 | Emergency Medicine Physician | Uniondale, NY | 2006 |
| Melanie O'Neill, RD | 1740632884 | Registered Dietitian | Bakersfield, CA | 2016 |
| Melissa O'Neill, LPCA | 1003313321 | Professional Counselor | Holly Springs, NC | 2018 |
| Melissa O'Neill, M.S. CCC-SLP | 1013478197 | Speech-Language Pathologist | Gaithersburg, MD | 2019 |
| Melissa O'Neill, MOT | 1144976960 | Occupational Therapist | Grass Lake, MI | 2022 |
| Melissa O'Neill | 1225402555 | Social Worker | Hillsdale, MI | 2015 |
| Melissa O'Neill, APRN | 1235236969 | Adult Health Nurse Practitioner | Lebanon, NH | 2006 |
| Melissa O'Neill, A.P.R.N. | 1265543870 | Nurse Practitioner | Omaha, NE | 2006 |
| Melissa O'Neill, PSYD | 1447693809 | Psychologist | Springfield, MA | 2013 |
| Melissa O'Neill, LMHC | 1457868770 | Mental Health Counselor | Fort Lauderdale, FL | 2018 |
| Melissa O'Neill, LCAT | 1518230127 | Art Therapist | Huntington Station, NY | 2012 |
| Melissa O'Neill, LCSW | 1700018439 | Clinical Social Worker | Evanston, IL | 2009 |
| Melissa O'Neill, M.S,, LPC | 1922304930 | Professional Counselor | Media, PA | 2011 |
| Meredith O'Neill, LPCC | 1205365996 | Professional Counselor | Miamisburg, OH | 2017 |
| Meredith O'Neill, MS CCC-SLP/L | 1649725839 | Speech-Language Pathologist | West Chester, PA | 2016 |
| Mia O'Neill | 1821596883 | Occupational Therapist | San Diego, CA | 2018 |
| Michael O'Neill, LICSW | 1003000795 | Clinical Social Worker | Saint Paul, MN | 2007 |
| Michael O'Neill, M.D. | 1073504650 | Diagnostic Radiology Physician | Leesburg, FL | 2005 |
| Michael O'Neill, M.D. | 1083655245 | Psychiatry Physician | Keshena, WI | 2006 |
| Michael O'Neill, M.D. | 1104067446 | Radiation Oncology Physician | Lynchburg, VA | 2009 |
| Michael O'Neill, PH.D | 1154346203 | Clinical Psychologist | Cohoes, NY | 2006 |
| Michael O'Neill, O.D | 1215317177 | Optometrist | Warren, PA | 2015 |
| Michael O'Neill, LCSW | 1225431349 | Clinical Social Worker | Greenbrae, CA | 2014 |
| Michael O'Neill, M.D. | 1356873319 | Internal Medicine Physician | Fairfield, CT | 2017 |
| Michael O'Neill, MD | 1386688760 | Urology Physician | Charlotte, NC | 2006 |
| Michael O'Neill, M.D. | 1457436511 | Emergency Medicine Physician | Lubbock, TX | 2006 |
| Michael O'Neill, MD | 1477510782 | Pediatrics Physician | Sparta, NJ | 2006 |
| Michael O'Neill, M.D. | 1477874485 | Hospitalist Physician | Miami, FL | 2010 |
| Michael O'Neill, D.D.S. | 1497911341 | Dentist | Rock Hill, SC | 2008 |
| Michael O'Neill, MD | 1598704678 | Hospice and Palliative Medicine (Internal Medicine) Physician | Marietta, GA | 2006 |
| Michael O'Neill, MS | 1760544787 | Professional Counselor | Eau Claire, WI | 2006 |
| Michael O'Neill, M.D. | 1770711673 | Vascular & Interventional Radiology Physician | Miami, FL | 2009 |
| Michael O'Neill, MD | 1790205524 | Emergency Medicine Physician | Scottsbluff, NE | 2017 |
| Michael O'Neill, DC | 1790539955 | Chiropractor | Fort Worth, TX | 2024 |
| Michael O'Neill | 1912237520 | Mental Health Counselor | Lexington, MA | 2010 |
| Michael O'Neill, LCDP | 1942611355 | Addiction (Substance Use Disorder) Counselor | Providence, RI | 2014 |
| Michael O'Neill, L.AC. | 1962715813 | Acupuncturist | Township Of Washington, NJ | 2010 |
| Michaela O'Neill, MD | 1245975853 | Hospitalist Physician | Evanston, IL | 2022 |
| Michele O'Neill, M.S.W. | 1033382288 | Clinical Social Worker | Charlotte, VT | 2008 |
| Michele O'Neill, CRNP | 1205211836 | Family Nurse Practitioner | Lititz, PA | 2015 |
| Michele O'Neill, LICSW | 1750715579 | Clinical Social Worker | Wilbraham, MA | 2013 |
| Michelle O'Neill, DDS | 1205098977 | Pediatric Dentistry | Houston, TX | 2008 |
| Michelle O'Neill, SPEECH PATHOLOGIST | 1306312350 | Speech-Language Pathologist | Rocklin, CA | 2018 |
| Michelle O'Neill, MD | 1316951130 | Emergency Medicine Physician | Boonville, IN | 2006 |
| Michelle O'Neill | 1437497765 | Pharmacist | Roanoke, VA | 2013 |
| Michelle O'Neill, P.A. | 1639182546 | Physician Assistant | Miami, FL | 2006 |
| Michelle O'Neill, RCSWI | 1760260897 | Clinical Social Worker | Montverde, FL | 2023 |
| Michelle O'Neill | 1881169753 | Addiction (Substance Use Disorder) Counselor | Neenah, WI | 2018 |
| Michelle O'Neill | 1942689187 | Other Technician | Minneapolis, MN | 2015 |
| Mickaela O'Neill, PA-C | 1306327234 | Physician Assistant | Glendale, AZ | 2018 |
| Mikalah O'Neill, C.N.M, | 1639317910 | Advanced Practice Midwife | Detroit, MI | 2009 |
| Miles O'Neill | 1851000723 | Clinical Social Worker | Belton, TX | 2022 |
| Miranda O'Neill | 1861085763 | Behavior Analyst | West Chester, PA | 2021 |
| Missy O'Neill, OTR/L | 1164772067 | Occupational Therapist | Tacoma, WA | 2012 |
| Mitchell O'Neill, M.D. | 1154785400 | Physical Medicine & Rehabilitation Physician | Milwaukee, WI | 2016 |
| Mitchell O'Neill, MD | 1184115214 | Physical Medicine & Rehabilitation Physician | Chicago, IL | 2018 |
| Molly O'Neill, O.D. | 1336553940 | Optometrist | Beavercreek, OH | 2014 |
| Molly O'Neill | 1396105482 | Occupational Therapist | Austin, TX | 2016 |
| Molly O'Neill, RN | 1558492595 | Registered Nurse First Assistant | Appleton, WI | 2007 |
| Molly O'Neill, PA-C | 1740993385 | Physician Assistant | Newton, MA | 2022 |
| Molly O'Neill, ND, L.AC | 1780705780 | Naturopath | Portland, OR | 2007 |
| Monica O'Neill, LCSW | 1073314902 | Clinical Social Worker | Gibson City, IL | 2025 |
| Monica O'Neill, MA CF-SLP | 1497547822 | Speech-Language Pathologist | Washington, DC | 2025 |
| Morgan O'Neill, DO | 1669213948 | Student in an Organized Health Care Education/Training Program | Ann Arbor, MI | 2024 |
| Morgan O'Neill, FNP | 1780411165 | Family Nurse Practitioner | Cos Cob, CT | 2024 |
| Morganne O'Neill, LMT | 1528706801 | Massage Therapist | Lake Oswego, OR | 2022 |
| Murron O'Neill | 1497477483 | Clinical Social Worker | East Greenwich, RI | 2022 |
| Nadine O'Neill, DC | 1285657312 | Chiropractor | Northport, NY | 2006 |
| Nancy O'Neill, MD | 1467556548 | Family Medicine Physician | Mars Hill, ME | 2006 |
| Nancy O'Neill, LCSW | 1649293275 | Clinical Social Worker | Springfield, VA | 2006 |
| Nancy O'Neill, LMP | 1750825451 | Massage Therapist | Renton, WA | 2016 |
| Nancy O'Neill, DDS, MS | 1790791879 | Orthodontics and Dentofacial Orthopedics Dentistry | Shrewsbury, PA | 2006 |
| Natalie O'Neill, M.D. | 1497198857 | Pediatric Surgery Physician | Norfolk, VA | 2013 |
| Nathan O'Neill | 1114189966 | Counselor | Olympia, WA | 2008 |
| Nathan O'Neill, DPT | 1376190843 | Physical Therapist | Clive, IA | 2019 |
| Nathan O'Neill, DMD | 1730600701 | Dentist | Antrim, NH | 2017 |
| Nell O'Neill | 1659030740 | Behavior Analyst | Des Plaines, IL | 2021 |
| Niambh O'Neill, MD | 1336908516 | Student in an Organized Health Care Education/Training Program | Denver, CO | 2024 |
| Niav O'Neill, MD | 1720825946 | Student in an Organized Health Care Education/Training Program | Marshfield, WI | 2024 |
| Nicholas O'Neill, D.O. | 1437509387 | Orthopaedic Surgery Physician | Fargo, ND | 2016 |
| Nicole O'Neill, PT, DPT | 1134327828 | Physical Therapist | Altoona, PA | 2007 |
| Nicole O'Neill | 1316795768 | Community Health Worker | Austintown, OH | 2024 |
| Nicole O'Neill, RDN | 1376170183 | Registered Dietitian | Rockford, IL | 2020 |
| Nicole O'Neill | 1497024319 | Speech-Language Pathologist | Long Beach, NY | 2011 |
| Nicole O'Neill, MD | 1619176385 | Internal Medicine Physician | Wyandotte, MI | 2007 |
| Nicole O'Neill | 1619563178 | Physical Therapist | Rockford, MN | 2020 |
| Nicole O'Neill, PHYSICIAN ASSISTANT | 1821266263 | Surgical Physician Assistant | Bend, OR | 2008 |
| Nicole O'Neill, LCSW | 1932636438 | Clinical Social Worker | Huntington, NY | 2017 |
| Nikki O'Neill, MD | 1609367226 | Obstetrics & Gynecology Physician | Mechanicsville, VA | 2018 |
Source: CMS National Plan and Provider Enumeration System (NPPES) (download.cms.gov). A listing is not a recommendation: check a license with the state board (license lookups).